For there are some eunuchs, which were so born from their mother's womb: and there are some eunuchs, which were made eunuchs of men: and there be eunuchs, which have made themselves eunuchs for the kingdom of heaven's sake. He that is able to receive it, let him receive it. Matthew 19:12

Trivia: According to 1 Kings 20, how many Syrians died when a wall fell on them?